ArcWatch: GIS News, Views, and Insights

October 2013

A Map App Odyssey

By Carla Wheeler
Esri Writer

Space. It’s a new frontier for scientific research and social media. International Space Station astronauts Chris Hadfield and Thomas Marshburn took Twitter to new heights when they sent Tweets embedded with stunning photographs of Earth to their followers. David MacLean, a GIS faculty member at Nova Scotia Community College, worked with his students to create a unique app to map the Tweets and the images. Read the article.

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The Our World From The ISS app mapped photos and Tweets from astronauts aboard the International Space Station.

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Tip of the Month

Use Feathering to Accentuate an Area of Interest

Feathering is a technique that makes the area you want to highlight on your map stand out and helps your audience focus on what’s important in the map. Read this tip to learn how to create the feathering effect.

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ArcWatch is published monthly by Esri and contains GIS news, practical advice, and updates about the company's software and events. To submit article ideas, e-mail editor Carla Wheeler at

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